Including an additional predictor to a multiple regression model will always increase the value of the adjusted R² value.

Question

Quizplus · Accepted Answer

Including an additional predictor to a multiple regression model will increase the R-squared value but not necessarily the adjusted R-squared value. The adjusted R-squared value takes into account the number of predictors in the model relative to the number of observations, and can decrease if the added predictor does not contribute enough to the model's explanatory power.

Including an Additional Predictor to a Multiple Regression Model Will